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Old 11-12-2019, 04:52 PM   #1
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Default Code Question

With a High Impedance neutral system reading 30 ohms, which of the following shall not be used to augment the system?

- gas pipe

- plate

- rod

- gas pipe, rod, plate

article: ?

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Old 11-12-2019, 06:07 PM   #2
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Is this a test/homework question? Where have you all looked?
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Old 11-12-2019, 06:09 PM   #3
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Is this a test/homework question? Where have you all looked?
It is on a code prep packet. I have been searching all through chapter 2.
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Old 11-12-2019, 06:32 PM   #4
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Try Art 250.52(B)(1).
250.52 has to to with Grounding electrodes. Supplemental electrode is needed (augment). Lastly, bonding is different (info note referencing 250.104(B) ). And if I'm wrong, someone will correct me.
Btw, read read 250.52 until you get familiar with it.
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Last edited by Bird dog; 11-12-2019 at 06:55 PM.
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Old 11-12-2019, 06:56 PM   #5
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Originally Posted by Bird dog View Post
Try Art 250.52(B)(1).
250.52 has to to with Grounding electrodes. Supplemental electrode is needed (augment). Lastly, bonding is different (info note referencing 250.104(B) ). And if I'm wrong, someone will correct me.
Btw, read read 250.52 until you get familiar with it.
No mention of High Impedance neutral system though.
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Old 11-12-2019, 06:59 PM   #6
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No mention of High Impedance neutral system though.
Go to the index in the back & look up all the references to "High-impedance grounded neutral systems". All the references are in Art 250.
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Last edited by Bird dog; 11-12-2019 at 09:51 PM.
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